Can we reschedule the flight booked with ixigo?

Yes, you can get your flight rescheduled but you have to contact the concerned provider. Ixigo.com is a travel search engine, it's an infomediary that aggregates travel websites to compare information and provide you the best deals. It redirects you to the provider's website for making the bookings. Please contact the concerned provider and follow up with them directly in case you have any queries.